A correlated view of chiral-induced spin selectivity

Prof. Jonas Fransson (University of Uppsala)

Thursday May 4, 10 am

ICMCB amphitheatre – Conference de Quantum Matter

Lien vers les infos : QMBx seminar Jonas Fransson 2023 – Quantum Matter Bordeaux (cnrs.fr)

Chiral-induced spin selectivity is an intriguing phenomenon that, to our knowledge, rests on a foundation of structural chirality, spin-orbit interactions, and strongly non-equilibrium conditions. The effect is a measure of the response to changes in the magnetic environment coupled to the active region, and the phenomenology refers back to the experimental observations of substantial changes in the charge current amplitude through chiral molecules upon changes in the external magnetic conditions. Chiral-induced spin selectivity has been shown to not be limited to multistranded helical structures, such as double-stranded DNA molecules and bacteriorhodopsin, but has also been observed in, for example, various types of peptides and polyalanines and, recently, also in helicene.

In order to depart from the generic single electron, or, non-interacting models that have, quite unsuccessfully, been used in attempts to describe the chiral-induced spin selectivity effect, it is proposes to include many-body effects, arising from, e.g., electron-electron or electron-vibron interactions. In cooperation with spin-orbit interactions, the many-body interactions generate exchange splitting between the spin channels which is viable for the chiral-induced spin selectivity phenomenon. By constructing models comprising either electron-electron or electron-vibron interactions, it can be demonstrated that the chiral-induced spin selectivity effect increases by several orders of magnitude compared to the results from any non-interacting description. The phenomenology of the chiral-induced spin selectivity effect indicates that charge transfer within the chiral molecule is accompanied by the emergence of intra-molecular spin-polarization.

  1. Fransson, Chirality induced spin-selectivity: The role of electron correlation: J Phys Chem Lett, 10, 7126 (2019).
  2. Fransson, Vibrational origin of exchange splitting and chiral-induced spin selectivity: Phys Rev B, 102, 235416 (2020).
  3. Fransson, Charge Redistribution and Spin Polarization Driven by Correlation Induced Electron Exchange in Chiral Molecules: Nano Lett, 21, 3026 (2021).
  4. Fransson, Charge and Spin Dynamics and Enantioselectivity in Chiral Molecules: J Phys Chem Lett, 13, 808 (2022).

Contact: Elizabeth Hillard <elizabeth.hillard@icmcb.cnrs.fr>

JACC-4to7 oct. 2022

Journées André Collet de la Chiralité


October 4-7 (2022) in a wonderfull place in Biarritz
deadline for abstract submission : June 15th 2022
early bird registration starting : July 1rst 2022

With as Plenary and Keynote speakers :

  • Melanie Schnell
  • Tiziana Benincori
  • Marie-Claire Schanne Klein
  • Hiroshi Yamamoto
  • Eric Meggers
  • Etienne Brasselet
  • Mathieu Raynal
  • Benjamin Abécassis
  • Jess Wade
  • Félix Freire

AAP MITI du CNRS/transverse aux instituts: lumière et vie


  • Montant <30 keuros
  • date limite de dépôt : 19/01/2022 @ 12h00s
  • deux unités rattachées principalement à deux instituts différents du CNRSs
  • accord de la direction d’unité du porteur est requis
  • candidature avec préinscriptions
  • Aucun CDD, gratification de stage, salaire de doctorant ou post-doctorant ne pourra être financé

extrait choisi parmi plusieurs thèmes : la photochirogénèse, étude de l’apparition de la chiralité du vivant sous l’effet de la lumière polarisée, et plus généralement la photochimie prébiotique, c’est-à-dire l’apparition de systèmes riches en énergie chimique (biomolécules).

Our Kick-off Meeting

29th of Nov. 2021


  • Location : IECB- 2, Rue Robert Escarpit – 33607 PESSAC.
  • IECB’s Plus Code to get it on a map: R93Q+8G Pessac
  • Health pass required
  • Wearing a mask is mandatory for the whole day.
  • for a green action : bring with you an old badge from a previous conference (with your name on  it:))
  • everything will be available on site for the installation of the posters
PROGRAM :(5 minutes of questions included in each talk slot)
9h-9h30 : Welcome (with control of your health pass)/poster installation/
10 minutes of presentation

  • 9h30-10h : Thomas Barois (LOMA)
    Chirality at LOMA
  • 10h-10h30 : Alexander Kuhn (ISM)
    Unconventional approaches for the direct readout of chiral information

10h30 -11h00 : Coffee break/poster installation

  • 11h00-11h30 : Yann Mairesse (CELIA)
    Chirality in intense laser fields
  • 11h30-12h: Techniques for observation of Chirality by Thierry Buffeteau and Guillaume Raffy (ISM)
    Techniques chiroptiques développées au sein du groupe GSM de l’ISM (T.B.)
    Development of photoluminescence polarization microscopy techniques with CPL capability (G.R.)
  • 12h- 12h30: Marie-Hélène Delville and Baptiste Vignolle (ICMCB)
    Chirality and QDs nanoobjects (MH. D.)
    Intertwining superconductivity and crystal chirality in molecular solids (B.V.)

12h30-14h30 : lunch/discussion and poster’s presentation

  • 14h30-15h00: Claude Geffroy and Sébastien Papot (IC2MP)
    Interlocked molecules, origin of life and chirality : from synthesis to the analysis of chiral compounds (C.G. and S.P.)
  • 15h00-15h30: Eric Grelet (CRPP)
    Origin of chirality in self-organized phases of viruses.
  • 15h30-16h: Techniques for observation of Chirality by Valérie Gabelica (IECB) and Vincent Rodriguez (ISM)
    Measuring Chirality in a Mass Spectrometer (V.G.)
    Hyper-Rayleigh Optical Activity as a New Chiroptical Method (V.R.)
  • 16h – 16h30 : Lucile Fischer and Emilie Pouget (CBMN)
    Detection of protein/foldamer interactions by induced chirality (L.F.)
    Design of functional nanostructures via chirality induction (E.P.)

16h30-open : Poster session and discussion with coffee.